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Borrowings (Tables)
6 Months Ended
Jun. 30, 2019
Debt Disclosure [Abstract]  
Schedule of Annual Future Minimum Principal Payments Under Loan Agreements
The table below summarizes annual future minimum principal payments under the loan agreement as of June 30, 2019 (in thousands):
Remainder of 2019
$

2020
4,444

2021
17,778

2022
17,778

Total future minimum payments
40,000

Less: Amount representing debt discount
(907
)
Long-term borrowings
$
39,093